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Studies on the Improvement of Herb Tea by Addition of Yucca (Yucca shidigera)  

Young Hee-Tae (Dept. of Food & Nutrition, Daejeon Health Sciences College)
Choi Hwa-Jung (Dept. of Interdisciplinary Program in Agricultural Biotechnology, Seoul National University)
Publication Information
The Korean Journal of Food And Nutrition / v.18, no.1, 2005 , pp. 48-53 More about this Journal
Abstract
Herbs and yucca(Yucca shidigera) are widely used a source of tea and otherwise such as botanical medicine, essential oil for perfumes, cosmetics, and food spices. This study was carried out to investigate the characteristics of herb tea prepared with lemon verbena, spearmint, apple mint, Korea mint, rosemary, pineapple sage, Chrysanthemum indicum, stevia, lavender, lemon balm cultivated in Korea and effects by addition of yucca. Approximate composition of yucca were as follows: moisture 5.88%, crude protein 5.46%, crude fat 0.69%, crude ash and 7.59%. pH of herb tea mixed yucca at 80℃ was decreased in lemon verbena, spearmint, apple mint, Korea mint, and rosemary in comparison herb tea alone, but soluble solids were similar in two tea. In the result of sensory test, herb tea and herb tea mixed Yucca were not difference with a few exceptions. pH of mentha(Korea mint) tea by addition of yucca was decreased according to increment amount of yucca. The sensory evaluation score of mentha tea by addition of yucca were increased when the tea was processed with 0.01∼0.04% yucca.
Keywords
herb tea; yucca; mentha; sensory evaluation; composition;
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